Automatic elevator or hoist.



No. 78,698. Patented Nov. l8, I902. J. SEWELL.=

AUTOMATIC ELEVATOR 0R :HOIS T.

(Application fi1ed Fe 3, 1 02.)

(No Model.)

llnrrnn TATES p JONATHAN SEWELL, OF ANACONDA, MONTANA.

AUTOMATIC ELEVATOR OR HOIST.

$.PECIFIGATION forming part of Letters Patent No. 713,698, datedNovember 18, 1902.

Application filed February 3. 1902. Serial No. 92,451. (No model.)

10 all whom it may concern:

Be it known that I, JONATHAN SnwnLL, a citizen of the United States,residing at Anaconda, in the county of Deerlodge and State of Montana,have invented a new and useful Automatic Elevator or Hoist, of which thefollowing is a specification.

This invention is an improved device for raising and lowering buckets orskips for raising and lowering coal, ore, and similar materials, and theinvention can also be employed for elevating ashes and similar materialfrom the hold of a vessel.

The object of the invention is to provide an exceedingly simple andefficient construction of operating mechanism which will not be easilydamaged by the coarse nature of the material handled.

Another object of the invention is to provide an apparatus wherein acontinuous rotary motion can be utilized for creating a reciprocatingmotion for the purpose of raising one bucket or skip simultaneously withthe lowering of the other bucket or skip.

With these objects in view the invention consists in the novel featuresof construction and combination, all of which will be fully describedhereinafter and pointed out in the claims.

In the drawings forming part of this specification,Figure 1 is adiagrammatic view illustrating my invention. Fig. 2 is a plan view. Fig.3 is a section on the line 3 3 of Fig. 2. Fig. 4 is a section on theline 4 4 of Fig. 2. Fig. 5 is a sectional elevation illustrating theposition of the ropes.

In constructing an elevator or hoisting apparatus in accordance with myinvention I employ a track A, mounted upon suitable supports A, andmoving on said track is a carriage B, the axles B and B having a seriesof sheaves C and C mounted thereon.

A fixed frame D is arranged upon the track midway its length, said framehaving parallel horizontal shafts D and D journaled therein and uponwhich are mounted-the sheaves E and E respectively. The fixed frame D isarranged within the carriage B and is provided with ears or lugs G and Gto which the ropes or cables H and H respectively, are connected, saidropes or cables passing around the pulleys or sheaves, as hereinafterexplained, and then over a pulley or sheave I, the said ropes carryingthe buckets or skips K and K at their lower ends. The rope H, which isattached to the lug G, is first passed around one of the pulleys orsheaves B, then around one of the pulleys or sheaves E, back around thenext sheave or pulley B, and so on until the entire series have beenpassed and the said rope or cable passes over the sheave or pulley I.The rope or cable H which is attached to the lug G first passes aroundone of the pulleys O thence back to the sheave or pulley E back to thenext pulley C and so on until all of the pulleys C and E have beenpassed. The rope then passes over the sheave or pulley I. A pitman L isconnected to one end of the carriage B, the opposite end of the saidpitman being connected to a worm-disk M, operated by the worm N, mountedupon the shaft 0.

In the construction herein shown and described the carriage is supposedto move a distance of five feet in each direction, and inasmuch as foursets of pulleys or sheaves are employed it will be readily understoodthat this distance is multiplied four times in each direction, therebygiving each bucket or skip a lift of forty feet, and these movements areoccasioned by the reciprocation of the carriage upon the track, and thecontinuous rotary movement of the shaft 0 and Worm N causes the wormdisk to travel gradually around, thereby uniformly moving the carriageback and forth, causing one set of ropes to be Wound up while the otherset is being unwound, and inasmuch as two periods of comparative restwill be obtained during each revolution these periods can be utilizedfor the loading and unloading of the buckets or skips, thus enabling themachinery to be kept continuously in motion and at the same timeaffording those loading and unloading sufficient opportunity to performtheir operations.

It will thus be seen that I provide an exceedingly cheap, simple, andeflicientdevice for elevating or hoisting buckets or skips, and it willalso be noted that inasmuch as raising and lowering mechanism does notcome in contact with the material to any great extent the damageincidental to such contact is reduced to a minimum.

Having thus fully described my invention,

ICC

what I claim as new, and desire to secure by Letters Patent, is-

1. A device of the kind described, comprising a fixed frame, tracksarranged thereon, a reciprocating carriage adapted to travel on saidtrack, a plurality of pulleys mounted on said carriage, means forreciprocating said carriage, a plurality of cables secured atone end tothe fixed frame, and buckets attached to the free ends of said cables.

2. A device of the kind described, comprising a fixed frame, tracksarranged thereon, a reciprocating carriage on said track, a plurality ofpulleys mounted on said carriage, brackets secured centrally of thefixed frame, a plurality of pulleys carried by said brackets, aplurality of cables secured at one end to the brackets and passingaround their respective pulleys, buckets secured to the other ends ofthe cables, and means for reciprocating the carriage.

3. A device of the kind described, comprising a fixed frame havingtracks thereon, a movable carriage, pulleys secured to each end of thecarriage, brackets secured to the fixed frame, pulleys loosely mountedin the brackets, a worm-gear shaft, a pitman secured to the carriage atone end and to the Worm-gear at the other, cables secured to thebrackets and passing in opposite directions around their respectivepulleys, and buckets secured to the other ends of the cables.

. 4. In a device of the kind described, the combination with a fixedframe, tracks on the frame, of brackets secured thereto, pulleys mountedin said brackets and arranged in an upper and lower series, areciprocating carriage adapted to move on the track, a plurality ofpulleys at each end of said carriage, a worm-shaft, a Worm-gear meshingWith said Worm-shaft, a pitman connected at one end to the carriage andat the other to the worm-gear, cables attached to the opposite sides ofone of the brackets passing in opposite directions, first around thecarriagepulleys and then around the pulleys on the brackets, and bucketssecured to the other ends of the cables.

' JONATHAN SEWELL. Witnesses:

O. B. ASHLOCK, JOHN W. JAMES.

